—Have you known Mr. Smith for a long time?—Yes, since he ______ to our university.
—________ is the pay phone? —It’s behind the bank.
Do you enjoy ________ Chinese in our school, Bob?
—How is it going? — ________.
— ________ is the weather in Linshu? — ________ windy.
It’s so noisy. I can’t _____.